CODEWITHSUNDEEP
fluttergoogle-drive-api
Nishuthan S
Nishuthan S

Reputation: 1735

How to overwrite files in google drive using API flutter

The Problem

I'm using Google Drive to store application-specific data. I can read and write data to my drive buy whenever I want to update the config in the drive a new file is created instead of updating the old one.

I have tried the following:

  1. Gave the file an ID but the following error appears

Unhandled Exception: DetailedApiRequestError(status: 400, message: The provided file ID is not usable.)

  1. Got the ID generated by the API and used the same code and got the following error

Unhandled Exception: DetailedApiRequestError(status: 409, message: A file already exists with the provided ID.)

My Code:

    final signIn.GoogleSignInAccount account = await _googleSignIn.signIn();
    final authHeaders = await account.authHeaders;
    final authenticateClient = GoogleAuthClient(authHeaders);
    final driveApi = drive.DriveApi(authenticateClient);

    File _data = await _report.backupData(); //gets data to be overwriten
    final Stream<List<int>> mediaStream = _data.openRead();
    var media = new drive.Media(mediaStream, _data.lengthSync());
    var driveFile = new drive.File();
    driveFile.parents=['appDataFolder'];
    driveFile.name = "backup.mw";
    final result = await driveApi.files.create(driveFile, uploadMedia: media,);
    print("Upload result: ${result.id}");

Upvotes: 3

Views: 961

Answers (1)

Linda Lawton - DaImTo
Linda Lawton - DaImTo

Reputation: 117016

The code you are using does a files.create file create will create a new file every time it is run.

final result = await driveApi.files.create(driveFile, uploadMedia: media,);

If you want to update an existing file then you will need to do Files.update

Upvotes: 2

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